Interruption of wudu.

 

If during wudu'ablution), one finds dirt stuck on his fingers, does
working on removing the dirt by scrubbing it off disrupt the continuity
of the wudu' and require repeating it?

Continuity would not disrupted by such action (according to the
most viable opinion) even if his body had dried, because he was delayed due
to an action required for his purity. The same is true if he were to move from
one faucet to another in search of water.

However, if continuity were disrupted due to an action not related
to his , like removing impurity from his clothes, eating or drinking and the
like, and the limbs became dry, then he needs to repeat the wudu'.1

From the book What Should You Do in
the Following Situations... ?

1 Fatawi ibn Uthaimeen
4/145-146 (Dar al-Qutni)